dt-bindings: Fix error in 'make dtbs_check' when using DT_SCHEMA_FILES
If DT_SCHEMA_FILES is specified and contains more than one file paths,
'make dtbs_check' fails with the following message:
$ make dtbs_check DT_SCHEMA_FILES="path/to/schema1.yaml path/to/schema2.yaml"
SCHEMA Documentation/devicetree/bindings/processed-schema.json
Documentation/devicetree/bindings/Makefile:77: recipe for target 'Documentation/devicetree/bindings/processed-schema.json' failed
make[1]: *** [Documentation/devicetree/bindings/processed-schema.json] Error 255
make[1]: *** Deleting file 'Documentation/devicetree/bindings/processed-schema.json'
Makefile:1364: recipe for target 'dt_binding_check' failed
make: *** [dt_binding_check] Error 2
The error code 255 is returned by 'dt-mk-schema' when invoked as
'dt-mk-schema -j -u @<tmp-file>', where '<tmp-file>' is a temporary
file that is generated to contain a list of SPACE delimited schema
file paths, as indicated via DT_SCHEMA_FILES.
However, it seems the file format has been recently changed in
'dt-mk-schema', which now expects each schema path to be provided on
a separate line:
$ dt-mk-schema --version
2020.12.dev4+g6de1c45
Therefore, let's change '<tmp-file>' content format from
path/to/schema1.yaml path/to/schema2.yaml ... path/to/schemaN.yaml
to
path/to/schema1.yaml
path/to/schema2.yaml
...
path/to/schemaN.yaml
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Link: https://lore.kernel.org/r/2519b8bde507ca6ccea9765ea197adaaa69a66d5.1605712328.git.cristian.ciocaltea@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>